High revs on valver
- greendale65
- BXpert
- Posts: 507
- Joined: Sun Mar 02, 2014 5:52 pm
- x 19
High revs on valver
Hello all, I'm still getting high revs sometimes as much as 3000 rpm
got to sort this out can anyone give me a clue to fix.
I have changed the idle control valve also
the flow meter still the same.
thanks.
got to sort this out can anyone give me a clue to fix.
I have changed the idle control valve also
the flow meter still the same.
thanks.
-
- Over 2k
- Posts: 2695
- Joined: Sun Sep 02, 2012 9:54 pm
- Location: South Lincs
- My Cars: 90 Bx Tzd turbo ven red 295k
74 D Super 5 black
05 Volvo V50 2.0d 180k
65 Peugeot Boxer work van 280k - x 136
Re: High revs on valver
Is this all the time or on cold start or intermittent?
90 BX Tzd turbo 294k SORN undergoing major surgery
90 BX Tzd turbo estate 46k awaiting surgery
65 Peugeot Boxer Van the new workhorse
52 Toyota Rav4 180k Bulletproof Jap reliability
90 BX Tzd turbo estate 46k awaiting surgery
65 Peugeot Boxer Van the new workhorse
52 Toyota Rav4 180k Bulletproof Jap reliability
-
- BXpert
- Posts: 582
- Joined: Tue Aug 15, 2006 11:15 am
- Location: East London
- My Cars: 1991 Citroen BX 16v
- x 26
Re: High revs on valver
I get this on my valver too, when it's hot. Think it's a sticky throttle position sensor/switch. A quick blap on the pedal gets the revs to settle down.
Minor adjustment may be needed to the throttle cable stop to ensure that the throttle position switch is activating (you can hear a click if you listen closely when activating it by hand), also consider removing, cleaning, and lubricating the throttle butterfly etc.
Minor adjustment may be needed to the throttle cable stop to ensure that the throttle position switch is activating (you can hear a click if you listen closely when activating it by hand), also consider removing, cleaning, and lubricating the throttle butterfly etc.
1991 Citroen BX 16v
- themildbunch
- BXpert
- Posts: 592
- Joined: Fri Apr 30, 2010 9:38 pm
- Location: Stroud, UK
- x 5
- Contact:
Re: High revs on valver
also worth checking the butterfly springs.. they can break causing a high idle...
1988 BX 19 Gti 16v
1991 BX 17 TZD Estate
1991 BX 17 TZD Estate
1991 BX 17 TZD Estate
1991 BX 17 TZD Estate
- greendale65
- BXpert
- Posts: 507
- Joined: Sun Mar 02, 2014 5:52 pm
- x 19
Re: High revs on valver
Hello all, It goes on high revs when I start the car and tkes some time to settle down.
-
- Over 2k
- Posts: 2695
- Joined: Sun Sep 02, 2012 9:54 pm
- Location: South Lincs
- My Cars: 90 Bx Tzd turbo ven red 295k
74 D Super 5 black
05 Volvo V50 2.0d 180k
65 Peugeot Boxer work van 280k - x 136
Re: High revs on valver
Air leak between throttle body and airflow meter, check hoses for cracks and breathers are all tight, with engine running on slow idle spray carb cleaner around the hoses/intake/breathers etc when revs go up you have found your leak.
90 BX Tzd turbo 294k SORN undergoing major surgery
90 BX Tzd turbo estate 46k awaiting surgery
65 Peugeot Boxer Van the new workhorse
52 Toyota Rav4 180k Bulletproof Jap reliability
90 BX Tzd turbo estate 46k awaiting surgery
65 Peugeot Boxer Van the new workhorse
52 Toyota Rav4 180k Bulletproof Jap reliability
- greendale65
- BXpert
- Posts: 507
- Joined: Sun Mar 02, 2014 5:52 pm
- x 19
Re: High revs on valver
Ok, Thanks will do tomoz,
will post if ok.
thanks.
will post if ok.
thanks.
- MULLEY
- Over 2k
- Posts: 8406
- Joined: Thu Jun 22, 2006 11:10 pm
- Location: Derbyshire
- My Cars: 1999 Xsara LX 2.0HDI (90) Hatch - Fern
2002 C5 2.0 HDI (110) Estate - Jasmine - SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - SORN
1992 TZD Turbo Estate - SORN
1991 Gti 16V - Blaze - crash damaged, will get repaired - SORN
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN - x 8
Re: High revs on valver
I had a broken wire on the plug that goes into the afm, that helped mine reduces the idle revs
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN
I'm not just a username, i'm also called Matthew.
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN
I'm not just a username, i'm also called Matthew.
- greendale65
- BXpert
- Posts: 507
- Joined: Sun Mar 02, 2014 5:52 pm
- x 19
Re: High revs on valver
Ok I don't hear that click where do I get a throttle sensor switch.
- jamescarruthers
- BXpert
- Posts: 571
- Joined: Wed Nov 07, 2012 2:11 pm
- Location: Cambridge
- x 23
)
Try ignitioncarparts.co.uk. They were significantly cheaper for the 480's TPS. Also, before you replace, try setting it up correctly. Can someone elaborate on if the BX system TPS setup procedure?
Having set up a 480's years ago, it was just loosening two nuts and rotating until set right (click when throttle closed) then locking off the nuts and verifying the other switch (inside TPS) worked at full throttle.
Having set up a 480's years ago, it was just loosening two nuts and rotating until set right (click when throttle closed) then locking off the nuts and verifying the other switch (inside TPS) worked at full throttle.
1987 Volvo 480 ES
2006 Citroen C6 Exclusive 3.0 petrol/LPG
Previous BX's:
A966 XRL -- BX 16 TRS
H767 BEG -- BX 14 TGE
B316 AMP -- BX 14 E
2006 Citroen C6 Exclusive 3.0 petrol/LPG
Previous BX's:
A966 XRL -- BX 16 TRS
H767 BEG -- BX 14 TGE
B316 AMP -- BX 14 E
- greendale65
- BXpert
- Posts: 507
- Joined: Sun Mar 02, 2014 5:52 pm
- x 19
Re: High revs on valver
Ok, Thanks for help have something to go on now.
-
- BXpert
- Posts: 582
- Joined: Tue Aug 15, 2006 11:15 am
- Location: East London
- My Cars: 1991 Citroen BX 16v
- x 26
Re: High revs on valver
Don't go throwing money at a new switch just yet. The switch may well be working fine - but failing to activate because the acc cable is too tight. The fact that your revs settle down after a while implies that it does work, but perhaps doesn't get activated as often as it should. It's quite a fine adjustment to get the right balance between it activating on the one hand, or on the other hand having such a slack cable that your acceleration response becomes poor.
Be methodical, go through all the advice about air leaks as well, the switch could be a total red herring.
Be methodical, go through all the advice about air leaks as well, the switch could be a total red herring.
1991 Citroen BX 16v
- greendale65
- BXpert
- Posts: 507
- Joined: Sun Mar 02, 2014 5:52 pm
- x 19
Re: High revs on valver
Hi, Ok will get onto that next week wont use car to Monday
don't do much mileage these days.
will get back on sorting car.
don't do much mileage these days.
will get back on sorting car.
- greendale65
- BXpert
- Posts: 507
- Joined: Sun Mar 02, 2014 5:52 pm
- x 19
Re: High revs on valver
Hi, Ok will get onto that next week wont use car to Monday
don't do much mileage these days.
will get back on sorting car.
don't do much mileage these days.
will get back on sorting car.
-
- Over 2k
- Posts: 2695
- Joined: Sun Sep 02, 2012 9:54 pm
- Location: South Lincs
- My Cars: 90 Bx Tzd turbo ven red 295k
74 D Super 5 black
05 Volvo V50 2.0d 180k
65 Peugeot Boxer work van 280k - x 136
Re: High revs on valver
Its unlikely the the TPS as this only tells the ECU if throttle is closed or wide open, the potentiometer on the airflow meter dials in the mixture controls etc. I would be more inclined by an air leak pre throttle body, bear in mind most of the rubber pipes will be 25 odd years old and do crack/perish, you only need the smallest leak to upset idle and cold starts.
90 BX Tzd turbo 294k SORN undergoing major surgery
90 BX Tzd turbo estate 46k awaiting surgery
65 Peugeot Boxer Van the new workhorse
52 Toyota Rav4 180k Bulletproof Jap reliability
90 BX Tzd turbo estate 46k awaiting surgery
65 Peugeot Boxer Van the new workhorse
52 Toyota Rav4 180k Bulletproof Jap reliability